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Figure 2 Images showing TRV and TVI_RVOT in a patient with elevated PVR. (A) TRV is 3.64 m/s. (B) TVI_RVOT shows a clear deceleration of pulmonary flow before the pulmonic valve closure click and is calculated at 6.5 cm. The ratio of TRV/TVI_RVOT = 3.64/6.5 = 0.56. . This patient’s invasive PVR measurement is also within 0.4 WU of the echocardiographic value (PVR_CATH = 6.0 WU). Abbreviations as in Figure 1.